Re: [PATCH 2/2] hw/i386/amd_iommu: Fix xtsup when vcpus < 255

2025-04-10 Thread Alejandro Jimenez
On 4/10/25 2:44 AM, Sairaj Kodilkar wrote: From: Vasant Hegde If vCPUs > 255 then x86 common code (x86_cpus_init()) call kvm_enable_x2apic(). But if vCPUs <= 255 then it won't call kvm_enable_x2apic(). Booting guest in x2apic mode, amd-iommu,xtsup=on and <= 255 vCPUs is broken as it fails t

Re: [PATCH 2/2] hw/i386/amd_iommu: Fix xtsup when vcpus < 255

2025-04-10 Thread Joao Martins
+x86 maintainers (you forgot to CC them) On 10/04/2025 07:44, Sairaj Kodilkar wrote: > From: Vasant Hegde > > If vCPUs > 255 then x86 common code (x86_cpus_init()) call > kvm_enable_x2apic(). > But if vCPUs <= 255 then it won't call kvm_enable_x2apic(). > > Booting guest in x2apic mode, amd-io

[PATCH 2/2] hw/i386/amd_iommu: Fix xtsup when vcpus < 255

2025-04-10 Thread Sairaj Kodilkar
From: Vasant Hegde If vCPUs > 255 then x86 common code (x86_cpus_init()) call kvm_enable_x2apic(). But if vCPUs <= 255 then it won't call kvm_enable_x2apic(). Booting guest in x2apic mode, amd-iommu,xtsup=on and <= 255 vCPUs is broken as it fails to call kvm_enable_x2apic(). Fix this by adding